> > my_config.h: config.h > > sed 's/#define /#define MY_/; s/#undef /#undef MY_/' <config.h >$@
It would appear I can air my dirty code :) We define some of our own defines, that are already prefixed, so we have to take care of the case of double prefixing. We also wrap the header in an `#ifndef PREFIX_CONFIG_H; #define PREFIX_CONFIG_H ; #endif' so we don't have to worry about multiple inclusion. Finally: config.h: _config.h echo "#ifndef PREFIX_CONFIG_H" > $(output) echo "#define PREFIX_CONFIG_H" >> $(output) sed -e 's/#define /#define PREFIX_/' \ -e 's/#undef /#undef PREFIX_/' \ -e 's/PREFIX_PREFIX_/PREFIX_/' < $(input) >> $(output) echo "#endif /* PREFIX_CONFIG_H */" >> $(output) Pretty icky, but it does get the job done. -- Clinton Roy Meetings - ``Try, or no try; there is no do.''